Question

Consider $\left(i\right)C{O}_2,\left(ii\right)CC{l}_4,\left(iii\right)C_{6}C{l}_6$ and $\left(iv\right)CO$ and tell which of the following statements is correct ?

• A. (i), (ii) and (iii) only have: zero dipole moment
• B. (i), (ii) and (iv) only have zero dipole moment (c)
• C. only (iv)(d) has zero dipole moment
• D. All have zero dipole moment

Answer 1

The correct option is A (i), (ii) and (iii) only have: zero dipole moment

In $C{O}_2,CC{l}_4$ and $C_{6}C{l}_6$, all polar bonds possess the same value of dipole moment, thus overall dipole moment of the molecule is found to be zero.
Whereas in case of $CO$, the dipole moment is equal to the dipole moment of $C-O$ bond.